[SCSI] 2.6 aacraid: Variable FIB size (updated patch)
New code from the Adaptec driver. Performance enhancement for newer
adapters. I hope that this isn't too big for a single patch. I believe
that other than the few small cleanups mentioned, that the changes are
all related.
- Added Variable FIB size negotiation for new adapters.
- Added support to maximize scatter gather tables and thus permit
requests larger than 64KB/each.
- Limit Scatter Gather to 34 elements for ROMB platforms.
- aac_printf is only enabled with AAC_QUIRK_34SG
- Large FIB ioctl support
- some minor cleanup
Passes sparse check.
I have tested it on x86 and ppc64 machines.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/aacraid/sa.c b/drivers/scsi/aacraid/sa.c
index 100c5a0..0680249 100644
--- a/drivers/scsi/aacraid/sa.c
+++ b/drivers/scsi/aacraid/sa.c
@@ -106,7 +106,10 @@
sa_writew(dev, DoorbellReg_s,DOORBELL_3);
break;
case HostShutdown:
- //sa_sync_cmd(dev, HOST_CRASHING, 0, &ret);
+ /*
+ sa_sync_cmd(dev, HOST_CRASHING, 0, 0, 0, 0, 0, 0,
+ NULL, NULL, NULL, NULL, NULL);
+ */
break;
case FastIo:
sa_writew(dev, DoorbellReg_s,DOORBELL_6);
@@ -132,7 +135,9 @@
* for its completion.
*/
-static int sa_sync_cmd(struct aac_dev *dev, u32 command, u32 p1, u32 *ret)
+static int sa_sync_cmd(struct aac_dev *dev, u32 command,
+ u32 p1, u32 p2, u32 p3, u32 p4, u32 p5, u32 p6,
+ u32 *ret, u32 *r1, u32 *r2, u32 *r3, u32 *r4)
{
unsigned long start;
int ok;
@@ -144,9 +149,10 @@
* Write the parameters into Mailboxes 1 - 4
*/
sa_writel(dev, Mailbox1, p1);
- sa_writel(dev, Mailbox2, 0);
- sa_writel(dev, Mailbox3, 0);
- sa_writel(dev, Mailbox4, 0);
+ sa_writel(dev, Mailbox2, p2);
+ sa_writel(dev, Mailbox3, p3);
+ sa_writel(dev, Mailbox4, p4);
+
/*
* Clear the synch command doorbell to start on a clean slate.
*/
@@ -188,6 +194,14 @@
*/
if (ret)
*ret = sa_readl(dev, Mailbox0);
+ if (r1)
+ *r1 = sa_readl(dev, Mailbox1);
+ if (r2)
+ *r2 = sa_readl(dev, Mailbox2);
+ if (r3)
+ *r3 = sa_readl(dev, Mailbox3);
+ if (r4)
+ *r4 = sa_readl(dev, Mailbox4);
return 0;
}
@@ -201,7 +215,8 @@
static void aac_sa_interrupt_adapter (struct aac_dev *dev)
{
u32 ret;
- sa_sync_cmd(dev, BREAKPOINT_REQUEST, 0, &ret);
+ sa_sync_cmd(dev, BREAKPOINT_REQUEST, 0, 0, 0, 0, 0, 0,
+ &ret, NULL, NULL, NULL, NULL);
}
/**
@@ -233,7 +248,9 @@
sa_writew(dev, SaDbCSR.PRISETIRQMASK, 0xffff);
sa_writew(dev, SaDbCSR.PRICLEARIRQMASK, (PrintfReady | DOORBELL_1 | DOORBELL_2 | DOORBELL_3 | DOORBELL_4));
/* We can only use a 32 bit address here */
- sa_sync_cmd(dev, INIT_STRUCT_BASE_ADDRESS, (u32)(ulong)dev->init_pa, &ret);
+ sa_sync_cmd(dev, INIT_STRUCT_BASE_ADDRESS,
+ (u32)(ulong)dev->init_pa, 0, 0, 0, 0, 0,
+ &ret, NULL, NULL, NULL, NULL);
}
/**